Manufacture of carbonic acid



(.No Model.)

-G. ARNOIS.

MANUPAGTURE 0F GARBONIG ACID.

No. 368,123- Patented Aug. 9, 1887.

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n* f Il I WITNESSES.- WVENTOR www B22/MAQ TTORNEYS UNITED STATES vPATENT OFFICE.

oi-IARLEs ARNOIs, or BROOKLYN, NEW YORK.

lMANUFACTURE OF CARBONIC ACID.

SPECIFICATION forming part of Letters Patent No. 368,123, dated August 9, 1887.

Application filed July 15, 1886. Serial No. 208,084.

To all whom it may concern:

Be it known that I, CHARLES ARNoIs, a citizen of the United States, residing at Brooklyn,

in the county of Kings and State of New York,

'gas through a heated mass of a metallic oxidizing agent, such as oxide of iron, and then separating the products resulting from the reaction of the oxidizing agent upon the watergas by condensing the steam, leaving thecarbonio acidI in a gaseous form ready for use. When the metallic oxidizing agent has become exhausted, the supply of water-gas is stopped and the oxidizing agent is regenerated by passing a current of atmospheric air through it.

The apparatus which may be used in carrying out my invention is illustrated in the aocompanying drawing, which represents a longitudinal vertical section.

In the drawing, the letter A designates an air-tight receptacle, which I call the converter,7 and which is provided with a perforated bottom or grate, a. The space above this bottom is filled with a metallic oxide, such as oxide of iron, oxide of manganese, oxide of copper, or with any of the compounds of said oxides, such as the manganates, permanganatos, or chromates, or with a mixture of two or more of the above-named oxidizing agents. I use by preference the oxide of iron or manganese, which I heat up to above G00o Fahrenheit; but the temperature to which the oxidizing agent is heated must be below the melting point ofthe same. Below the bottom a ofthe converter are three pipes, b c d, the pipe b being intended for supplying wator-gas, the pipe c for supplying steam, and. the pipe d for supplying air. From the top of the converter 'extends a pipe, e, the upper end of which is closed by a valve,

.i5 f. From the side of thepipe c extends a pipe,

g, into-a liquid seal, B, and from the top of this liquid seal extends a pipe, 7L, into a con denser, C, which connects by a pipe, 27, with the gas-holder D. Vhen the contents of the admitting a supply of water-gas through the (No model.)

pipe b and atthe same time a supply of air through the pipe cl and then igniting the water-gas, or which may be accomplished by any othersuitable means--I open the stop-oook of the pipe g and pass a current of water-gas through the heated oxidizing agent in the oonverter. On its passage through the oxidizing agent the water-gas is converted into carbonio acid and steam, and the mixture of carbonio acid and steam thus produced passes through the pipe g into the liquid seal B, and thence through the pipe 7L into the condenser C,where it is exposed to a shower of cold water. The steam contained in the mixture is thereby condensed, while the gaseous carbonio acid escapes' through the pipe t' into the'holder D.

Vhen the oxidizing agent in the converter A has become to a certain degree exhausted, I close the water-gas supply-pipe b. IIhen I open the steam-pipe o and blow steam through the converter, whereby the gases contained therein are driven out through the pipe g, and after the gases have been driven out I close the steam-pipe c and open the valve f and the air-pipe d, so as to pass a current of air through the exhausted oxidizing agent in the converter. By the action o1' the air the oxidizing agent is regenerated, and when this has been accomplished the air-pipe d is closed, the gases oontained in the converter are blown out by steam, i

the valve f closed, and a new supply of water is passed through the converter, as above de scribed.

Vhat I claim as new, and desire to secure by Letters Patent, is-

l. The process herein described of manufacturing carbonio-acid gas, which consists in passing water-gas through a heated mass of a metallic oxidizing agent and thereby converting the water-gas into carbonio acid and steam, then condensing the steam to leave the carbonio acid in a gaseous form, and then collecting the carbonio-acid gas in a holder for subsequent use, substantially as set forth.

2. The process herein described of manufacturing carbonio-acid gas, which consists in passing water-gas through a heated mass of metallic oxidizing agent and thereby converting the water-gas into a mixture of carbonio acid. and steam, subjecting the said mixture to a showenbath, leaving the carbonio acid in a gaseous form, and then collecting the car'- 4. The method, substantially as described, for regenerating the oxidizing agent after the same has become exhausted, which consists in driving out the gases mixed with the exhausted oxidizing agent and then passing through said exhausted oxidizing agenta current of atmospheric air.

In testimony whereof I have hereunto set my hand and seal in the presence of two sub Scribing witnesses.

CHARLES ARNOIS.

Vi tn esscs XV. HAUFF, E. F. Kas'rnnnnnnn. 

